过氧化氢
氧化还原
催化作用
化学
无机化学
氧气
光化学
浸出(土壤学)
降级(电信)
双酚A
铜
离子
氢
材料科学
有机化学
环氧树脂
环境科学
土壤水分
土壤科学
电信
计算机科学
作者
Keliang Pan,Huijie Hou,Jing Hu,Jun Yang,Jianqiao Xiang,Chuncheng Li,Xu Chen,Sijing Chen,Sha Liang,Jiakuan Yang
出处
期刊:Chemosphere
[Elsevier]
日期:2022-12-01
卷期号:308: 136325-136325
被引量:13
标识
DOI:10.1016/j.chemosphere.2022.136325
摘要
Enhancements in the light response and hydrogen peroxide utilization are critical to the catalytic performance of heterogeneous Fenton-like perovskites. Here, in this research, oxygen vacancy-enriched La0.9Ca0.1Cu0.5Fe0.5O3-δ was prepared by a co-precipitation method with Cu substitution and Ca doping and demonstrated excellent performance for the degradation of bisphenol A. Both total organic carbon (TOC) removal and hydrogen peroxide utilization were close to 90% within 120 min at pH 3-7, where the TOC removal and hydrogen peroxide utilization were 2.5 times and 5.5 times of LaFeO3 in the absence of Ca and Cu doping. It demonstrated excellent stability to light irradiation and oxidation with respect to cycling and metal ion leaching. This revealed that oxygen vacancies were enriched in the catalyst with the substitution of Ca and Cu and contributed to the recombination of photogenerated electrons, thereby increasing the reduction efficiency of copper ions and accelerating the redox cycling of iron ions.
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